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Finding the Fourth Proportional to 291,667.98, 437,503.77 and 81,307.74

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Solution

The fourth proportional to 291,667.98, 437,503.77 and 81,307.74 is: 121,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,667.98 : 437,503.77 = 81,307.74 : x
  2. Step 2: Convert to fraction form
    291,667.98/437,503.77 = 81,307.74/x
  3. Step 3: Cross multiply
    291,667.98x = 437,503.77 × 81,307.74
  4. Step 4: Simplify right side
    291,667.98x = 35,572,442,780.18
  5. Step 5: Solve for x
    x = 35,572,442,780.18/291,667.98
  6. Step 6: Final answer
    x = 121,962.11

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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.