Home / 430,607.39-645,947.54-131,090.45

Finding the Fourth Proportional to 430,607.39, 645,947.54 and 131,090.45

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Solution

The fourth proportional to 430,607.39, 645,947.54 and 131,090.45 is: 196,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,607.39 : 645,947.54 = 131,090.45 : x
  2. Step 2: Convert to fraction form
    430,607.39/645,947.54 = 131,090.45/x
  3. Step 3: Cross multiply
    430,607.39x = 645,947.54 × 131,090.45
  4. Step 4: Simplify right side
    430,607.39x = 84,677,549,809.80
  5. Step 5: Solve for x
    x = 84,677,549,809.80/430,607.39
  6. Step 6: Final answer
    x = 196,646.77

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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.