Home / 487,928.79-731,711.15-167,990.28

Finding the Fourth Proportional to 487,928.79, 731,711.15 and 167,990.28

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Solution

The fourth proportional to 487,928.79, 731,711.15 and 167,990.28 is: 251,922.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,928.79 : 731,711.15 = 167,990.28 : x
  2. Step 2: Convert to fraction form
    487,928.79/731,711.15 = 167,990.28/x
  3. Step 3: Cross multiply
    487,928.79x = 731,711.15 × 167,990.28
  4. Step 4: Simplify right side
    487,928.79x = 122,920,358,013.72
  5. Step 5: Solve for x
    x = 122,920,358,013.72/487,928.79
  6. Step 6: Final answer
    x = 251,922.74

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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.