Home / 247,320,000.80-370,980,001.20-85,778,266.40

Finding the Fourth Proportional to 247,320,000.80, 370,980,001.20 and 85,778,266.40

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Solution

The fourth proportional to 247,320,000.80, 370,980,001.20 and 85,778,266.40 is: 128,667,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,320,000.80 : 370,980,001.20 = 85,778,266.40 : x
  2. Step 2: Convert to fraction form
    247,320,000.80/370,980,001.20 = 85,778,266.40/x
  3. Step 3: Cross multiply
    247,320,000.80x = 370,980,001.20 × 85,778,266.40
  4. Step 4: Simplify right side
    247,320,000.80x = 31,822,021,372,005,920
  5. Step 5: Solve for x
    x = 31,822,021,372,005,920/247,320,000.80
  6. Step 6: Final answer
    x = 128,667,399.60

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1.5x scale

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.