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Finding the Fourth Proportional to 268,312.55, 402,468.83 and 201,390.35

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Solution

The fourth proportional to 268,312.55, 402,468.83 and 201,390.35 is: 302,085.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,312.55 : 402,468.83 = 201,390.35 : x
  2. Step 2: Convert to fraction form
    268,312.55/402,468.83 = 201,390.35/x
  3. Step 3: Cross multiply
    268,312.55x = 402,468.83 × 201,390.35
  4. Step 4: Simplify right side
    268,312.55x = 81,053,337,530.84
  5. Step 5: Solve for x
    x = 81,053,337,530.84/268,312.55
  6. Step 6: Final answer
    x = 302,085.53

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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.