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Finding the Fourth Proportional to 353,400.48, 487,873.28 and 272,646.72

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Solution

The fourth proportional to 353,400.48, 487,873.28 and 272,646.72 is: 376,391.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,400.48 : 487,873.28 = 272,646.72 : x
  2. Step 2: Convert to fraction form
    353,400.48/487,873.28 = 272,646.72/x
  3. Step 3: Cross multiply
    353,400.48x = 487,873.28 × 272,646.72
  4. Step 4: Simplify right side
    353,400.48x = 133,017,049,567.64
  5. Step 5: Solve for x
    x = 133,017,049,567.64/353,400.48
  6. Step 6: Final answer
    x = 376,391.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.