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Finding the Fourth Proportional to 249,632.40, 374,448.60 and 83,420.40

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Solution

The fourth proportional to 249,632.40, 374,448.60 and 83,420.40 is: 125,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,632.40 : 374,448.60 = 83,420.40 : x
  2. Step 2: Convert to fraction form
    249,632.40/374,448.60 = 83,420.40/x
  3. Step 3: Cross multiply
    249,632.40x = 374,448.60 × 83,420.40
  4. Step 4: Simplify right side
    249,632.40x = 31,236,651,991.44
  5. Step 5: Solve for x
    x = 31,236,651,991.44/249,632.40
  6. Step 6: Final answer
    x = 125,130.60

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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.