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Finding the Fourth Proportional to 280,574.47, 387,332.45 and 173,203.71

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Solution

The fourth proportional to 280,574.47, 387,332.45 and 173,203.71 is: 239,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,574.47 : 387,332.45 = 173,203.71 : x
  2. Step 2: Convert to fraction form
    280,574.47/387,332.45 = 173,203.71/x
  3. Step 3: Cross multiply
    280,574.47x = 387,332.45 × 173,203.71
  4. Step 4: Simplify right side
    280,574.47x = 67,087,417,343.39
  5. Step 5: Solve for x
    x = 67,087,417,343.39/280,574.47
  6. Step 6: Final answer
    x = 239,107.35

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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.