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Finding the Fourth Proportional to 398,336.16, 549,731.04 and 243,353.76

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Solution

The fourth proportional to 398,336.16, 549,731.04 and 243,353.76 is: 335,844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,336.16 : 549,731.04 = 243,353.76 : x
  2. Step 2: Convert to fraction form
    398,336.16/549,731.04 = 243,353.76/x
  3. Step 3: Cross multiply
    398,336.16x = 549,731.04 × 243,353.76
  4. Step 4: Simplify right side
    398,336.16x = 133,779,115,572.71
  5. Step 5: Solve for x
    x = 133,779,115,572.71/398,336.16
  6. Step 6: Final answer
    x = 335,844.77

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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.