Home / 287,728,538.70-431,592,808.05-105,952,097.10

Finding the Fourth Proportional to 287,728,538.70, 431,592,808.05 and 105,952,097.10

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Solution

The fourth proportional to 287,728,538.70, 431,592,808.05 and 105,952,097.10 is: 158,928,145.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,728,538.70 : 431,592,808.05 = 105,952,097.10 : x
  2. Step 2: Convert to fraction form
    287,728,538.70/431,592,808.05 = 105,952,097.10/x
  3. Step 3: Cross multiply
    287,728,538.70x = 431,592,808.05 × 105,952,097.10
  4. Step 4: Simplify right side
    287,728,538.70x = 45,728,163,106,175,264
  5. Step 5: Solve for x
    x = 45,728,163,106,175,264/287,728,538.70
  6. Step 6: Final answer
    x = 158,928,145.65

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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.