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Finding the Fourth Proportional to 369,020.90, 551,509.44 and 269,390.90

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Solution

The fourth proportional to 369,020.90, 551,509.44 and 269,390.90 is: 402,610.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,020.90 : 551,509.44 = 269,390.90 : x
  2. Step 2: Convert to fraction form
    369,020.90/551,509.44 = 269,390.90/x
  3. Step 3: Cross multiply
    369,020.90x = 551,509.44 × 269,390.90
  4. Step 4: Simplify right side
    369,020.90x = 148,571,621,642.55
  5. Step 5: Solve for x
    x = 148,571,621,642.55/369,020.90
  6. Step 6: Final answer
    x = 402,610.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.