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Finding the Fourth Proportional to 249,415.20, 373,669.20 and 143,920.80

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Solution

The fourth proportional to 249,415.20, 373,669.20 and 143,920.80 is: 215,619.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,415.20 : 373,669.20 = 143,920.80 : x
  2. Step 2: Convert to fraction form
    249,415.20/373,669.20 = 143,920.80/x
  3. Step 3: Cross multiply
    249,415.20x = 373,669.20 × 143,920.80
  4. Step 4: Simplify right side
    249,415.20x = 53,778,770,199.36
  5. Step 5: Solve for x
    x = 53,778,770,199.36/249,415.20
  6. Step 6: Final answer
    x = 215,619.46

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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.