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Finding the Fourth Proportional to 487,835.60, 731,807.16 and 155,335.12

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Solution

The fourth proportional to 487,835.60, 731,807.16 and 155,335.12 is: 233,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,835.60 : 731,807.16 = 155,335.12 : x
  2. Step 2: Convert to fraction form
    487,835.60/731,807.16 = 155,335.12/x
  3. Step 3: Cross multiply
    487,835.60x = 731,807.16 × 155,335.12
  4. Step 4: Simplify right side
    487,835.60x = 113,675,353,015.46
  5. Step 5: Solve for x
    x = 113,675,353,015.46/487,835.60
  6. Step 6: Final answer
    x = 233,019.80

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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.