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Finding the Fourth Proportional to 288,014.80, 432,022.20 and 121,802.80

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Solution

The fourth proportional to 288,014.80, 432,022.20 and 121,802.80 is: 182,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,014.80 : 432,022.20 = 121,802.80 : x
  2. Step 2: Convert to fraction form
    288,014.80/432,022.20 = 121,802.80/x
  3. Step 3: Cross multiply
    288,014.80x = 432,022.20 × 121,802.80
  4. Step 4: Simplify right side
    288,014.80x = 52,621,513,622.16
  5. Step 5: Solve for x
    x = 52,621,513,622.16/288,014.80
  6. Step 6: Final answer
    x = 182,704.20

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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.