Home / 518,278.86-777,085.47-218,677.50

Finding the Fourth Proportional to 518,278.86, 777,085.47 and 218,677.50

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Solution

The fourth proportional to 518,278.86, 777,085.47 and 218,677.50 is: 327,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,278.86 : 777,085.47 = 218,677.50 : x
  2. Step 2: Convert to fraction form
    518,278.86/777,085.47 = 218,677.50/x
  3. Step 3: Cross multiply
    518,278.86x = 777,085.47 × 218,677.50
  4. Step 4: Simplify right side
    518,278.86x = 169,931,107,865.93
  5. Step 5: Solve for x
    x = 169,931,107,865.93/518,278.86
  6. Step 6: Final answer
    x = 327,875.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.