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Finding the Fourth Proportional to 243,339.13, 365,008.69 and 77,127.13

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Solution

The fourth proportional to 243,339.13, 365,008.69 and 77,127.13 is: 115,690.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,339.13 : 365,008.69 = 77,127.13 : x
  2. Step 2: Convert to fraction form
    243,339.13/365,008.69 = 77,127.13/x
  3. Step 3: Cross multiply
    243,339.13x = 365,008.69 × 77,127.13
  4. Step 4: Simplify right side
    243,339.13x = 28,152,072,684.76
  5. Step 5: Solve for x
    x = 28,152,072,684.76/243,339.13
  6. Step 6: Final answer
    x = 115,690.69

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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.