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Finding the Fourth Proportional to 243,341.60, 335,778.18 and 135,897.93

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Solution

The fourth proportional to 243,341.60, 335,778.18 and 135,897.93 is: 187,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,341.60 : 335,778.18 = 135,897.93 : x
  2. Step 2: Convert to fraction form
    243,341.60/335,778.18 = 135,897.93/x
  3. Step 3: Cross multiply
    243,341.60x = 335,778.18 × 135,897.93
  4. Step 4: Simplify right side
    243,341.60x = 45,631,559,601.17
  5. Step 5: Solve for x
    x = 45,631,559,601.17/243,341.60
  6. Step 6: Final answer
    x = 187,520.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.