Home / 287,864,139.60-431,796,209.40-282,124,576.80

Finding the Fourth Proportional to 287,864,139.60, 431,796,209.40 and 282,124,576.80

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Solution

The fourth proportional to 287,864,139.60, 431,796,209.40 and 282,124,576.80 is: 423,186,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,139.60 : 431,796,209.40 = 282,124,576.80 : x
  2. Step 2: Convert to fraction form
    287,864,139.60/431,796,209.40 = 282,124,576.80/x
  3. Step 3: Cross multiply
    287,864,139.60x = 431,796,209.40 × 282,124,576.80
  4. Step 4: Simplify right side
    287,864,139.60x = 121,820,322,840,819,184
  5. Step 5: Solve for x
    x = 121,820,322,840,819,184/287,864,139.60
  6. Step 6: Final answer
    x = 423,186,865.20

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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.