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Finding the Fourth Proportional to 288,830.40, 432,079.20 and 249,820.80

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Solution

The fourth proportional to 288,830.40, 432,079.20 and 249,820.80 is: 373,722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,830.40 : 432,079.20 = 249,820.80 : x
  2. Step 2: Convert to fraction form
    288,830.40/432,079.20 = 249,820.80/x
  3. Step 3: Cross multiply
    288,830.40x = 432,079.20 × 249,820.80
  4. Step 4: Simplify right side
    288,830.40x = 107,942,371,407.36
  5. Step 5: Solve for x
    x = 107,942,371,407.36/288,830.40
  6. Step 6: Final answer
    x = 373,722.33

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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.