Home / 280,561,000.19-387,157,473.81-155,105,679.47

Finding the Fourth Proportional to 280,561,000.19, 387,157,473.81 and 155,105,679.47

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Solution

The fourth proportional to 280,561,000.19, 387,157,473.81 and 155,105,679.47 is: 214,036,601.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,561,000.19 : 387,157,473.81 = 155,105,679.47 : x
  2. Step 2: Convert to fraction form
    280,561,000.19/387,157,473.81 = 155,105,679.47/x
  3. Step 3: Cross multiply
    280,561,000.19x = 387,157,473.81 × 155,105,679.47
  4. Step 4: Simplify right side
    280,561,000.19x = 60,050,323,035,252,992
  5. Step 5: Solve for x
    x = 60,050,323,035,252,992/280,561,000.19
  6. Step 6: Final answer
    x = 214,036,601.65

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1.5x scale

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.