Home / 315,924,923.20-473,887,384.80-212,612,792.80

Finding the Fourth Proportional to 315,924,923.20, 473,887,384.80 and 212,612,792.80

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Solution

The fourth proportional to 315,924,923.20, 473,887,384.80 and 212,612,792.80 is: 318,919,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,924,923.20 : 473,887,384.80 = 212,612,792.80 : x
  2. Step 2: Convert to fraction form
    315,924,923.20/473,887,384.80 = 212,612,792.80/x
  3. Step 3: Cross multiply
    315,924,923.20x = 473,887,384.80 × 212,612,792.80
  4. Step 4: Simplify right side
    315,924,923.20x = 100,754,520,355,016,272
  5. Step 5: Solve for x
    x = 100,754,520,355,016,272/315,924,923.20
  6. Step 6: Final answer
    x = 318,919,189.20

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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.