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Finding the Fourth Proportional to 385,756.81, 532,221.38 and 249,894.91

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Solution

The fourth proportional to 385,756.81, 532,221.38 and 249,894.91 is: 344,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,756.81 : 532,221.38 = 249,894.91 : x
  2. Step 2: Convert to fraction form
    385,756.81/532,221.38 = 249,894.91/x
  3. Step 3: Cross multiply
    385,756.81x = 532,221.38 × 249,894.91
  4. Step 4: Simplify right side
    385,756.81x = 132,999,413,855.18
  5. Step 5: Solve for x
    x = 132,999,413,855.18/385,756.81
  6. Step 6: Final answer
    x = 344,775.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.