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Finding the Fourth Proportional to 660,772.40, 991,417.80 and 240,090.80

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Solution

The fourth proportional to 660,772.40, 991,417.80 and 240,090.80 is: 360,230.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,772.40 : 991,417.80 = 240,090.80 : x
  2. Step 2: Convert to fraction form
    660,772.40/991,417.80 = 240,090.80/x
  3. Step 3: Cross multiply
    660,772.40x = 991,417.80 × 240,090.80
  4. Step 4: Simplify right side
    660,772.40x = 238,030,292,736.24
  5. Step 5: Solve for x
    x = 238,030,292,736.24/660,772.40
  6. Step 6: Final answer
    x = 360,230.38

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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.