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Finding the Fourth Proportional to 479,307.17, 718,781.34 and 205,718.84

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Solution

The fourth proportional to 479,307.17, 718,781.34 and 205,718.84 is: 308,501.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,307.17 : 718,781.34 = 205,718.84 : x
  2. Step 2: Convert to fraction form
    479,307.17/718,781.34 = 205,718.84/x
  3. Step 3: Cross multiply
    479,307.17x = 718,781.34 × 205,718.84
  4. Step 4: Simplify right side
    479,307.17x = 147,866,865,275.40
  5. Step 5: Solve for x
    x = 147,866,865,275.40/479,307.17
  6. Step 6: Final answer
    x = 308,501.26

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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.