Home / 385,615.46-578,406.15-105,132.74

Finding the Fourth Proportional to 385,615.46, 578,406.15 and 105,132.74

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Solution

The fourth proportional to 385,615.46, 578,406.15 and 105,132.74 is: 157,694.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,615.46 : 578,406.15 = 105,132.74 : x
  2. Step 2: Convert to fraction form
    385,615.46/578,406.15 = 105,132.74/x
  3. Step 3: Cross multiply
    385,615.46x = 578,406.15 × 105,132.74
  4. Step 4: Simplify right side
    385,615.46x = 60,809,423,382.35
  5. Step 5: Solve for x
    x = 60,809,423,382.35/385,615.46
  6. Step 6: Final answer
    x = 157,694.46

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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.