Home / 397,887,368.67-549,071,691.93-228,369,508.72

Finding the Fourth Proportional to 397,887,368.67, 549,071,691.93 and 228,369,508.72

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Solution

The fourth proportional to 397,887,368.67, 549,071,691.93 and 228,369,508.72 is: 315,142,531.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,887,368.67 : 549,071,691.93 = 228,369,508.72 : x
  2. Step 2: Convert to fraction form
    397,887,368.67/549,071,691.93 = 228,369,508.72/x
  3. Step 3: Cross multiply
    397,887,368.67x = 549,071,691.93 × 228,369,508.72
  4. Step 4: Simplify right side
    397,887,368.67x = 125,391,232,536,740,592
  5. Step 5: Solve for x
    x = 125,391,232,536,740,592/397,887,368.67
  6. Step 6: Final answer
    x = 315,142,531.30

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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.