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Finding the Fourth Proportional to 279,332.55, 385,520.43 and 164,574.51

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Solution

The fourth proportional to 279,332.55, 385,520.43 and 164,574.51 is: 227,137.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,332.55 : 385,520.43 = 164,574.51 : x
  2. Step 2: Convert to fraction form
    279,332.55/385,520.43 = 164,574.51/x
  3. Step 3: Cross multiply
    279,332.55x = 385,520.43 × 164,574.51
  4. Step 4: Simplify right side
    279,332.55x = 63,446,835,862.24
  5. Step 5: Solve for x
    x = 63,446,835,862.24/279,332.55
  6. Step 6: Final answer
    x = 227,137.28

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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.