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Finding the Fourth Proportional to 424,012.48, 585,173.12 and 288,347.36

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Solution

The fourth proportional to 424,012.48, 585,173.12 and 288,347.36 is: 397,943.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,012.48 : 585,173.12 = 288,347.36 : x
  2. Step 2: Convert to fraction form
    424,012.48/585,173.12 = 288,347.36/x
  3. Step 3: Cross multiply
    424,012.48x = 585,173.12 × 288,347.36
  4. Step 4: Simplify right side
    424,012.48x = 168,733,124,294.96
  5. Step 5: Solve for x
    x = 168,733,124,294.96/424,012.48
  6. Step 6: Final answer
    x = 397,943.77

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1.5x scale

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.