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Finding the Fourth Proportional to 630,170.51, 869,710.04 and 358,279.43

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Solution

The fourth proportional to 630,170.51, 869,710.04 and 358,279.43 is: 494,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,170.51 : 869,710.04 = 358,279.43 : x
  2. Step 2: Convert to fraction form
    630,170.51/869,710.04 = 358,279.43/x
  3. Step 3: Cross multiply
    630,170.51x = 869,710.04 × 358,279.43
  4. Step 4: Simplify right side
    630,170.51x = 311,599,211,256.53
  5. Step 5: Solve for x
    x = 311,599,211,256.53/630,170.51
  6. Step 6: Final answer
    x = 494,468.10

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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.