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Finding the Fourth Proportional to 386,340.30, 579,510.45 and 366,657.30

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Solution

The fourth proportional to 386,340.30, 579,510.45 and 366,657.30 is: 549,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,340.30 : 579,510.45 = 366,657.30 : x
  2. Step 2: Convert to fraction form
    386,340.30/579,510.45 = 366,657.30/x
  3. Step 3: Cross multiply
    386,340.30x = 579,510.45 × 366,657.30
  4. Step 4: Simplify right side
    386,340.30x = 212,481,736,918.79
  5. Step 5: Solve for x
    x = 212,481,736,918.79/386,340.30
  6. Step 6: Final answer
    x = 549,985.95

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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.