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Finding the Fourth Proportional to 385,886.66, 578,830.24 and 161,124.48

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Solution

The fourth proportional to 385,886.66, 578,830.24 and 161,124.48 is: 241,686.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,886.66 : 578,830.24 = 161,124.48 : x
  2. Step 2: Convert to fraction form
    385,886.66/578,830.24 = 161,124.48/x
  3. Step 3: Cross multiply
    385,886.66x = 578,830.24 × 161,124.48
  4. Step 4: Simplify right side
    385,886.66x = 93,263,721,428.28
  5. Step 5: Solve for x
    x = 93,263,721,428.28/385,886.66
  6. Step 6: Final answer
    x = 241,686.82

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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.