Home / 385,738.13-578,444.90-145,811.68

Finding the Fourth Proportional to 385,738.13, 578,444.90 and 145,811.68

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Solution

The fourth proportional to 385,738.13, 578,444.90 and 145,811.68 is: 218,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,738.13 : 578,444.90 = 145,811.68 : x
  2. Step 2: Convert to fraction form
    385,738.13/578,444.90 = 145,811.68/x
  3. Step 3: Cross multiply
    385,738.13x = 578,444.90 × 145,811.68
  4. Step 4: Simplify right side
    385,738.13x = 84,344,020,481.26
  5. Step 5: Solve for x
    x = 84,344,020,481.26/385,738.13
  6. Step 6: Final answer
    x = 218,656.16

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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.