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Finding the Fourth Proportional to 609,986.90, 915,231.29 and 268,254.45

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Solution

The fourth proportional to 609,986.90, 915,231.29 and 268,254.45 is: 402,492.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,986.90 : 915,231.29 = 268,254.45 : x
  2. Step 2: Convert to fraction form
    609,986.90/915,231.29 = 268,254.45/x
  3. Step 3: Cross multiply
    609,986.90x = 915,231.29 × 268,254.45
  4. Step 4: Simplify right side
    609,986.90x = 245,514,864,980.47
  5. Step 5: Solve for x
    x = 245,514,864,980.47/609,986.90
  6. Step 6: Final answer
    x = 402,492.03

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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.