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Finding the Fourth Proportional to 261,237.60, 391,856.40 and 156,002.40

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Solution

The fourth proportional to 261,237.60, 391,856.40 and 156,002.40 is: 234,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,237.60 : 391,856.40 = 156,002.40 : x
  2. Step 2: Convert to fraction form
    261,237.60/391,856.40 = 156,002.40/x
  3. Step 3: Cross multiply
    261,237.60x = 391,856.40 × 156,002.40
  4. Step 4: Simplify right side
    261,237.60x = 61,130,538,855.36
  5. Step 5: Solve for x
    x = 61,130,538,855.36/261,237.60
  6. Step 6: Final answer
    x = 234,003.60

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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.