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Finding the Fourth Proportional to 385,118.88, 577,624.88 and 118,888.16

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Solution

The fourth proportional to 385,118.88, 577,624.88 and 118,888.16 is: 178,315.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,118.88 : 577,624.88 = 118,888.16 : x
  2. Step 2: Convert to fraction form
    385,118.88/577,624.88 = 118,888.16/x
  3. Step 3: Cross multiply
    385,118.88x = 577,624.88 × 118,888.16
  4. Step 4: Simplify right side
    385,118.88x = 68,672,759,153.42
  5. Step 5: Solve for x
    x = 68,672,759,153.42/385,118.88
  6. Step 6: Final answer
    x = 178,315.74

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1.5x scale

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.