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Finding the Fourth Proportional to 653,131.61, 980,070.51 and 253,720.40

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Solution

The fourth proportional to 653,131.61, 980,070.51 and 253,720.40 is: 380,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,131.61 : 980,070.51 = 253,720.40 : x
  2. Step 2: Convert to fraction form
    653,131.61/980,070.51 = 253,720.40/x
  3. Step 3: Cross multiply
    653,131.61x = 980,070.51 × 253,720.40
  4. Step 4: Simplify right side
    653,131.61x = 248,663,876,925.05
  5. Step 5: Solve for x
    x = 248,663,876,925.05/653,131.61
  6. Step 6: Final answer
    x = 380,725.53

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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.