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Finding the Fourth Proportional to 438,020.22, 604,461.78 and 247,095.12

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Solution

The fourth proportional to 438,020.22, 604,461.78 and 247,095.12 is: 340,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,020.22 : 604,461.78 = 247,095.12 : x
  2. Step 2: Convert to fraction form
    438,020.22/604,461.78 = 247,095.12/x
  3. Step 3: Cross multiply
    438,020.22x = 604,461.78 × 247,095.12
  4. Step 4: Simplify right side
    438,020.22x = 149,359,556,064.51
  5. Step 5: Solve for x
    x = 149,359,556,064.51/438,020.22
  6. Step 6: Final answer
    x = 340,987.81

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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.