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Finding the Fourth Proportional to 418,995.91, 628,746.05 and 152,779.15

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Solution

The fourth proportional to 418,995.91, 628,746.05 and 152,779.15 is: 229,260.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,995.91 : 628,746.05 = 152,779.15 : x
  2. Step 2: Convert to fraction form
    418,995.91/628,746.05 = 152,779.15/x
  3. Step 3: Cross multiply
    418,995.91x = 628,746.05 × 152,779.15
  4. Step 4: Simplify right side
    418,995.91x = 96,059,287,084.86
  5. Step 5: Solve for x
    x = 96,059,287,084.86/418,995.91
  6. Step 6: Final answer
    x = 229,260.68

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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.