Home / 398,328.10-549,685.86-217,041.52

Finding the Fourth Proportional to 398,328.10, 549,685.86 and 217,041.52

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Solution

The fourth proportional to 398,328.10, 549,685.86 and 217,041.52 is: 299,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,328.10 : 549,685.86 = 217,041.52 : x
  2. Step 2: Convert to fraction form
    398,328.10/549,685.86 = 217,041.52/x
  3. Step 3: Cross multiply
    398,328.10x = 549,685.86 × 217,041.52
  4. Step 4: Simplify right side
    398,328.10x = 119,304,654,576.91
  5. Step 5: Solve for x
    x = 119,304,654,576.91/398,328.10
  6. Step 6: Final answer
    x = 299,513.53

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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.