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Finding the Fourth Proportional to 369,133.55, 509,267.68 and 216,145.61

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Solution

The fourth proportional to 369,133.55, 509,267.68 and 216,145.61 is: 298,200.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,133.55 : 509,267.68 = 216,145.61 : x
  2. Step 2: Convert to fraction form
    369,133.55/509,267.68 = 216,145.61/x
  3. Step 3: Cross multiply
    369,133.55x = 509,267.68 × 216,145.61
  4. Step 4: Simplify right side
    369,133.55x = 110,075,970,260.18
  5. Step 5: Solve for x
    x = 110,075,970,260.18/369,133.55
  6. Step 6: Final answer
    x = 298,200.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.