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Finding the Fourth Proportional to 155,011.20, 232,486.12 and 42,662.40

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Solution

The fourth proportional to 155,011.20, 232,486.12 and 42,662.40 is: 63,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,011.20 : 232,486.12 = 42,662.40 : x
  2. Step 2: Convert to fraction form
    155,011.20/232,486.12 = 42,662.40/x
  3. Step 3: Cross multiply
    155,011.20x = 232,486.12 × 42,662.40
  4. Step 4: Simplify right side
    155,011.20x = 9,918,415,845.89
  5. Step 5: Solve for x
    x = 9,918,415,845.89/155,011.20
  6. Step 6: Final answer
    x = 63,985.16

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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.