Home / 288,587,236.17-398,255,488.79-156,432,621.45

Finding the Fourth Proportional to 288,587,236.17, 398,255,488.79 and 156,432,621.45

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Solution

The fourth proportional to 288,587,236.17, 398,255,488.79 and 156,432,621.45 is: 215,879,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,587,236.17 : 398,255,488.79 = 156,432,621.45 : x
  2. Step 2: Convert to fraction form
    288,587,236.17/398,255,488.79 = 156,432,621.45/x
  3. Step 3: Cross multiply
    288,587,236.17x = 398,255,488.79 × 156,432,621.45
  4. Step 4: Simplify right side
    288,587,236.17x = 62,300,150,117,488,624
  5. Step 5: Solve for x
    x = 62,300,150,117,488,624/288,587,236.17
  6. Step 6: Final answer
    x = 215,879,783.68

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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.