Home / 287,961,740.78-397,398,479.34-162,518,318.55

Finding the Fourth Proportional to 287,961,740.78, 397,398,479.34 and 162,518,318.55

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Solution

The fourth proportional to 287,961,740.78, 397,398,479.34 and 162,518,318.55 is: 224,281,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,961,740.78 : 397,398,479.34 = 162,518,318.55 : x
  2. Step 2: Convert to fraction form
    287,961,740.78/397,398,479.34 = 162,518,318.55/x
  3. Step 3: Cross multiply
    287,961,740.78x = 397,398,479.34 × 162,518,318.55
  4. Step 4: Simplify right side
    287,961,740.78x = 64,584,532,656,663,712
  5. Step 5: Solve for x
    x = 64,584,532,656,663,712/287,961,740.78
  6. Step 6: Final answer
    x = 224,281,644.09

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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.