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Finding the Fourth Proportional to 496,959.60, 745,445.88 and 141,985.20

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Solution

The fourth proportional to 496,959.60, 745,445.88 and 141,985.20 is: 212,979.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,959.60 : 745,445.88 = 141,985.20 : x
  2. Step 2: Convert to fraction form
    496,959.60/745,445.88 = 141,985.20/x
  3. Step 3: Cross multiply
    496,959.60x = 745,445.88 × 141,985.20
  4. Step 4: Simplify right side
    496,959.60x = 105,842,282,360.98
  5. Step 5: Solve for x
    x = 105,842,282,360.98/496,959.60
  6. Step 6: Final answer
    x = 212,979.65

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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.