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Finding the Fourth Proportional to 316,758.64, 436,925.55 and 207,870.04

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Solution

The fourth proportional to 316,758.64, 436,925.55 and 207,870.04 is: 286,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,758.64 : 436,925.55 = 207,870.04 : x
  2. Step 2: Convert to fraction form
    316,758.64/436,925.55 = 207,870.04/x
  3. Step 3: Cross multiply
    316,758.64x = 436,925.55 × 207,870.04
  4. Step 4: Simplify right side
    316,758.64x = 90,823,731,555.52
  5. Step 5: Solve for x
    x = 90,823,731,555.52/316,758.64
  6. Step 6: Final answer
    x = 286,728.51

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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.