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Finding the Fourth Proportional to 369,608.20, 553,634.70 and 307,400.20

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Solution

The fourth proportional to 369,608.20, 553,634.70 and 307,400.20 is: 460,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,608.20 : 553,634.70 = 307,400.20 : x
  2. Step 2: Convert to fraction form
    369,608.20/553,634.70 = 307,400.20/x
  3. Step 3: Cross multiply
    369,608.20x = 553,634.70 × 307,400.20
  4. Step 4: Simplify right side
    369,608.20x = 170,187,417,506.94
  5. Step 5: Solve for x
    x = 170,187,417,506.94/369,608.20
  6. Step 6: Final answer
    x = 460,453.58

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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.