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Finding the Fourth Proportional to 534,782.80, 802,390.20 and 235,320.40

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Solution

The fourth proportional to 534,782.80, 802,390.20 and 235,320.40 is: 353,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,782.80 : 802,390.20 = 235,320.40 : x
  2. Step 2: Convert to fraction form
    534,782.80/802,390.20 = 235,320.40/x
  3. Step 3: Cross multiply
    534,782.80x = 802,390.20 × 235,320.40
  4. Step 4: Simplify right side
    534,782.80x = 188,818,782,820.08
  5. Step 5: Solve for x
    x = 188,818,782,820.08/534,782.80
  6. Step 6: Final answer
    x = 353,075.65

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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.