Home / 259,024,205.20-388,486,541.40-77,277,312.40

Finding the Fourth Proportional to 259,024,205.20, 388,486,541.40 and 77,277,312.40

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Solution

The fourth proportional to 259,024,205.20, 388,486,541.40 and 77,277,312.40 is: 115,901,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,024,205.20 : 388,486,541.40 = 77,277,312.40 : x
  2. Step 2: Convert to fraction form
    259,024,205.20/388,486,541.40 = 77,277,312.40/x
  3. Step 3: Cross multiply
    259,024,205.20x = 388,486,541.40 × 77,277,312.40
  4. Step 4: Simplify right side
    259,024,205.20x = 30,021,195,822,963,332
  5. Step 5: Solve for x
    x = 30,021,195,822,963,332/259,024,205.20
  6. Step 6: Final answer
    x = 115,901,121.29

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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.