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Finding the Fourth Proportional to 387,585.04, 534,802.56 and 215,498.20

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Solution

The fourth proportional to 387,585.04, 534,802.56 and 215,498.20 is: 297,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,585.04 : 534,802.56 = 215,498.20 : x
  2. Step 2: Convert to fraction form
    387,585.04/534,802.56 = 215,498.20/x
  3. Step 3: Cross multiply
    387,585.04x = 534,802.56 × 215,498.20
  4. Step 4: Simplify right side
    387,585.04x = 115,248,989,035.39
  5. Step 5: Solve for x
    x = 115,248,989,035.39/387,585.04
  6. Step 6: Final answer
    x = 297,351.49

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1.5x scale

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.