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Finding the Fourth Proportional to 518,250.44, 715,186.30 and 288,802.70

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Solution

The fourth proportional to 518,250.44, 715,186.30 and 288,802.70 is: 398,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,250.44 : 715,186.30 = 288,802.70 : x
  2. Step 2: Convert to fraction form
    518,250.44/715,186.30 = 288,802.70/x
  3. Step 3: Cross multiply
    518,250.44x = 715,186.30 × 288,802.70
  4. Step 4: Simplify right side
    518,250.44x = 206,547,730,145.07
  5. Step 5: Solve for x
    x = 206,547,730,145.07/518,250.44
  6. Step 6: Final answer
    x = 398,548.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.