Home / 369,278.40-509,601.60-218,372.16

Finding the Fourth Proportional to 369,278.40, 509,601.60 and 218,372.16

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Solution

The fourth proportional to 369,278.40, 509,601.60 and 218,372.16 is: 301,352.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,278.40 : 509,601.60 = 218,372.16 : x
  2. Step 2: Convert to fraction form
    369,278.40/509,601.60 = 218,372.16/x
  3. Step 3: Cross multiply
    369,278.40x = 509,601.60 × 218,372.16
  4. Step 4: Simplify right side
    369,278.40x = 111,282,802,131.46
  5. Step 5: Solve for x
    x = 111,282,802,131.46/369,278.40
  6. Step 6: Final answer
    x = 301,352.05

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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.