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Finding the Fourth Proportional to 249,768, 374,553.38 and 99,980.37

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Solution

The fourth proportional to 249,768, 374,553.38 and 99,980.37 is: 149,931.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,768 : 374,553.38 = 99,980.37 : x
  2. Step 2: Convert to fraction form
    249,768/374,553.38 = 99,980.37/x
  3. Step 3: Cross multiply
    249,768x = 374,553.38 × 99,980.37
  4. Step 4: Simplify right side
    249,768x = 37,447,985,517.15
  5. Step 5: Solve for x
    x = 37,447,985,517.15/249,768
  6. Step 6: Final answer
    x = 149,931.08

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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.