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Finding the Fourth Proportional to 640,029.90, 960,423.60 and 235,506.17

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Solution

The fourth proportional to 640,029.90, 960,423.60 and 235,506.17 is: 353,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,029.90 : 960,423.60 = 235,506.17 : x
  2. Step 2: Convert to fraction form
    640,029.90/960,423.60 = 235,506.17/x
  3. Step 3: Cross multiply
    640,029.90x = 960,423.60 × 235,506.17
  4. Step 4: Simplify right side
    640,029.90x = 226,185,686,014.67
  5. Step 5: Solve for x
    x = 226,185,686,014.67/640,029.90
  6. Step 6: Final answer
    x = 353,398.62

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1.5x scale

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.