Home / 461,427.10-692,140.65-145,980.70

Finding the Fourth Proportional to 461,427.10, 692,140.65 and 145,980.70

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Solution

The fourth proportional to 461,427.10, 692,140.65 and 145,980.70 is: 218,971.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,427.10 : 692,140.65 = 145,980.70 : x
  2. Step 2: Convert to fraction form
    461,427.10/692,140.65 = 145,980.70/x
  3. Step 3: Cross multiply
    461,427.10x = 692,140.65 × 145,980.70
  4. Step 4: Simplify right side
    461,427.10x = 101,039,176,585.46
  5. Step 5: Solve for x
    x = 101,039,176,585.46/461,427.10
  6. Step 6: Final answer
    x = 218,971.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.