Home / 289,041,110.52-398,871,727.56-156,879,270.78

Finding the Fourth Proportional to 289,041,110.52, 398,871,727.56 and 156,879,270.78

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Solution

The fourth proportional to 289,041,110.52, 398,871,727.56 and 156,879,270.78 is: 216,490,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,041,110.52 : 398,871,727.56 = 156,879,270.78 : x
  2. Step 2: Convert to fraction form
    289,041,110.52/398,871,727.56 = 156,879,270.78/x
  3. Step 3: Cross multiply
    289,041,110.52x = 398,871,727.56 × 156,879,270.78
  4. Step 4: Simplify right side
    289,041,110.52x = 62,574,705,754,371,632
  5. Step 5: Solve for x
    x = 62,574,705,754,371,632/289,041,110.52
  6. Step 6: Final answer
    x = 216,490,677.20

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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.