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Finding the Fourth Proportional to 370,480.72, 511,256.73 and 209,332.31

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Solution

The fourth proportional to 370,480.72, 511,256.73 and 209,332.31 is: 288,874.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,480.72 : 511,256.73 = 209,332.31 : x
  2. Step 2: Convert to fraction form
    370,480.72/511,256.73 = 209,332.31/x
  3. Step 3: Cross multiply
    370,480.72x = 511,256.73 × 209,332.31
  4. Step 4: Simplify right side
    370,480.72x = 107,022,549,345.17
  5. Step 5: Solve for x
    x = 107,022,549,345.17/370,480.72
  6. Step 6: Final answer
    x = 288,874.82

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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.