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Finding the Fourth Proportional to 533,886.66, 736,761.63 and 288,870.68

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Solution

The fourth proportional to 533,886.66, 736,761.63 and 288,870.68 is: 398,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,886.66 : 736,761.63 = 288,870.68 : x
  2. Step 2: Convert to fraction form
    533,886.66/736,761.63 = 288,870.68/x
  3. Step 3: Cross multiply
    533,886.66x = 736,761.63 × 288,870.68
  4. Step 4: Simplify right side
    533,886.66x = 212,828,829,372.20
  5. Step 5: Solve for x
    x = 212,828,829,372.20/533,886.66
  6. Step 6: Final answer
    x = 398,640.47

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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.