Home / 315,219,689.20-472,829,533.80-194,287,337.20

Finding the Fourth Proportional to 315,219,689.20, 472,829,533.80 and 194,287,337.20

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Solution

The fourth proportional to 315,219,689.20, 472,829,533.80 and 194,287,337.20 is: 291,431,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,219,689.20 : 472,829,533.80 = 194,287,337.20 : x
  2. Step 2: Convert to fraction form
    315,219,689.20/472,829,533.80 = 194,287,337.20/x
  3. Step 3: Cross multiply
    315,219,689.20x = 472,829,533.80 × 194,287,337.20
  4. Step 4: Simplify right side
    315,219,689.20x = 91,864,791,071,519,392
  5. Step 5: Solve for x
    x = 91,864,791,071,519,392/315,219,689.20
  6. Step 6: Final answer
    x = 291,431,005.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.