Home / 287,713,005.10-431,569,507.65-105,922,566.70

Finding the Fourth Proportional to 287,713,005.10, 431,569,507.65 and 105,922,566.70

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Solution

The fourth proportional to 287,713,005.10, 431,569,507.65 and 105,922,566.70 is: 158,883,850.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,713,005.10 : 431,569,507.65 = 105,922,566.70 : x
  2. Step 2: Convert to fraction form
    287,713,005.10/431,569,507.65 = 105,922,566.70/x
  3. Step 3: Cross multiply
    287,713,005.10x = 431,569,507.65 × 105,922,566.70
  4. Step 4: Simplify right side
    287,713,005.10x = 45,712,949,959,743,288
  5. Step 5: Solve for x
    x = 45,712,949,959,743,288/287,713,005.10
  6. Step 6: Final answer
    x = 158,883,850.05

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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.