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Finding the Fourth Proportional to 398,248.61, 549,576.68 and 216,962.73

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Solution

The fourth proportional to 398,248.61, 549,576.68 and 216,962.73 is: 299,405.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,248.61 : 549,576.68 = 216,962.73 : x
  2. Step 2: Convert to fraction form
    398,248.61/549,576.68 = 216,962.73/x
  3. Step 3: Cross multiply
    398,248.61x = 549,576.68 × 216,962.73
  4. Step 4: Simplify right side
    398,248.61x = 119,237,655,752.32
  5. Step 5: Solve for x
    x = 119,237,655,752.32/398,248.61
  6. Step 6: Final answer
    x = 299,405.08

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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.