Home / 258,750,411.20-388,125,616.80-105,506,446.40

Finding the Fourth Proportional to 258,750,411.20, 388,125,616.80 and 105,506,446.40

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Solution

The fourth proportional to 258,750,411.20, 388,125,616.80 and 105,506,446.40 is: 158,259,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,750,411.20 : 388,125,616.80 = 105,506,446.40 : x
  2. Step 2: Convert to fraction form
    258,750,411.20/388,125,616.80 = 105,506,446.40/x
  3. Step 3: Cross multiply
    258,750,411.20x = 388,125,616.80 × 105,506,446.40
  4. Step 4: Simplify right side
    258,750,411.20x = 40,949,754,585,376,144
  5. Step 5: Solve for x
    x = 40,949,754,585,376,144/258,750,411.20
  6. Step 6: Final answer
    x = 158,259,669.60

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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.