Home / 459,005.20-688,507.80-143,461.60

Finding the Fourth Proportional to 459,005.20, 688,507.80 and 143,461.60

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Solution

The fourth proportional to 459,005.20, 688,507.80 and 143,461.60 is: 215,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,005.20 : 688,507.80 = 143,461.60 : x
  2. Step 2: Convert to fraction form
    459,005.20/688,507.80 = 143,461.60/x
  3. Step 3: Cross multiply
    459,005.20x = 688,507.80 × 143,461.60
  4. Step 4: Simplify right side
    459,005.20x = 98,774,430,600.48
  5. Step 5: Solve for x
    x = 98,774,430,600.48/459,005.20
  6. Step 6: Final answer
    x = 215,192.40

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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.