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Finding the Fourth Proportional to 291,875.93, 437,777.65 and 78,660.52

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Solution

The fourth proportional to 291,875.93, 437,777.65 and 78,660.52 is: 117,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,875.93 : 437,777.65 = 78,660.52 : x
  2. Step 2: Convert to fraction form
    291,875.93/437,777.65 = 78,660.52/x
  3. Step 3: Cross multiply
    291,875.93x = 437,777.65 × 78,660.52
  4. Step 4: Simplify right side
    291,875.93x = 34,435,817,593.38
  5. Step 5: Solve for x
    x = 34,435,817,593.38/291,875.93
  6. Step 6: Final answer
    x = 117,981.01

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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.