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Finding the Fourth Proportional to 511,250.76, 705,527.43 and 307,418.40

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Solution

The fourth proportional to 511,250.76, 705,527.43 and 307,418.40 is: 424,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,250.76 : 705,527.43 = 307,418.40 : x
  2. Step 2: Convert to fraction form
    511,250.76/705,527.43 = 307,418.40/x
  3. Step 3: Cross multiply
    511,250.76x = 705,527.43 × 307,418.40
  4. Step 4: Simplify right side
    511,250.76x = 216,892,113,686.71
  5. Step 5: Solve for x
    x = 216,892,113,686.71/511,250.76
  6. Step 6: Final answer
    x = 424,238.22

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Double scale
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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.