Home / 398,369.03-549,702.90-243,242.28

Finding the Fourth Proportional to 398,369.03, 549,702.90 and 243,242.28

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Solution

The fourth proportional to 398,369.03, 549,702.90 and 243,242.28 is: 335,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,369.03 : 549,702.90 = 243,242.28 : x
  2. Step 2: Convert to fraction form
    398,369.03/549,702.90 = 243,242.28/x
  3. Step 3: Cross multiply
    398,369.03x = 549,702.90 × 243,242.28
  4. Step 4: Simplify right side
    398,369.03x = 133,710,986,718.61
  5. Step 5: Solve for x
    x = 133,710,986,718.61/398,369.03
  6. Step 6: Final answer
    x = 335,646.04

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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.