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Finding the Fourth Proportional to 249,620.10, 374,430.15 and 138,812.10

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Solution

The fourth proportional to 249,620.10, 374,430.15 and 138,812.10 is: 208,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,620.10 : 374,430.15 = 138,812.10 : x
  2. Step 2: Convert to fraction form
    249,620.10/374,430.15 = 138,812.10/x
  3. Step 3: Cross multiply
    249,620.10x = 374,430.15 × 138,812.10
  4. Step 4: Simplify right side
    249,620.10x = 51,975,435,424.82
  5. Step 5: Solve for x
    x = 51,975,435,424.82/249,620.10
  6. Step 6: Final answer
    x = 208,218.15

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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.