Home / 287,415,680.13-431,117,333.42-80,148,574.17

Finding the Fourth Proportional to 287,415,680.13, 431,117,333.42 and 80,148,574.17

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Solution

The fourth proportional to 287,415,680.13, 431,117,333.42 and 80,148,574.17 is: 120,221,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,415,680.13 : 431,117,333.42 = 80,148,574.17 : x
  2. Step 2: Convert to fraction form
    287,415,680.13/431,117,333.42 = 80,148,574.17/x
  3. Step 3: Cross multiply
    287,415,680.13x = 431,117,333.42 × 80,148,574.17
  4. Step 4: Simplify right side
    287,415,680.13x = 34,553,439,573,184,748
  5. Step 5: Solve for x
    x = 34,553,439,573,184,748/287,415,680.13
  6. Step 6: Final answer
    x = 120,221,136.01

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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.