Home / 387,720.17-581,580.45-121,501.52

Finding the Fourth Proportional to 387,720.17, 581,580.45 and 121,501.52

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Solution

The fourth proportional to 387,720.17, 581,580.45 and 121,501.52 is: 182,252.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,720.17 : 581,580.45 = 121,501.52 : x
  2. Step 2: Convert to fraction form
    387,720.17/581,580.45 = 121,501.52/x
  3. Step 3: Cross multiply
    387,720.17x = 581,580.45 × 121,501.52
  4. Step 4: Simplify right side
    387,720.17x = 70,662,905,769.38
  5. Step 5: Solve for x
    x = 70,662,905,769.38/387,720.17
  6. Step 6: Final answer
    x = 182,252.34

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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.