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Finding the Fourth Proportional to 249,400.40, 374,100.60 and 99,663.80

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Solution

The fourth proportional to 249,400.40, 374,100.60 and 99,663.80 is: 149,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,400.40 : 374,100.60 = 99,663.80 : x
  2. Step 2: Convert to fraction form
    249,400.40/374,100.60 = 99,663.80/x
  3. Step 3: Cross multiply
    249,400.40x = 374,100.60 × 99,663.80
  4. Step 4: Simplify right side
    249,400.40x = 37,284,287,378.28
  5. Step 5: Solve for x
    x = 37,284,287,378.28/249,400.40
  6. Step 6: Final answer
    x = 149,495.70

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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.