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Finding the Fourth Proportional to 268,488.68, 370,515.74 and 147,637.76

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Solution

The fourth proportional to 268,488.68, 370,515.74 and 147,637.76 is: 203,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,488.68 : 370,515.74 = 147,637.76 : x
  2. Step 2: Convert to fraction form
    268,488.68/370,515.74 = 147,637.76/x
  3. Step 3: Cross multiply
    268,488.68x = 370,515.74 × 147,637.76
  4. Step 4: Simplify right side
    268,488.68x = 54,702,111,307.57
  5. Step 5: Solve for x
    x = 54,702,111,307.57/268,488.68
  6. Step 6: Final answer
    x = 203,740.85

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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.