Home / 400,925.17-553,276.70-239,780.21

Finding the Fourth Proportional to 400,925.17, 553,276.70 and 239,780.21

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Solution

The fourth proportional to 400,925.17, 553,276.70 and 239,780.21 is: 330,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,925.17 : 553,276.70 = 239,780.21 : x
  2. Step 2: Convert to fraction form
    400,925.17/553,276.70 = 239,780.21/x
  3. Step 3: Cross multiply
    400,925.17x = 553,276.70 × 239,780.21
  4. Step 4: Simplify right side
    400,925.17x = 132,664,803,314.11
  5. Step 5: Solve for x
    x = 132,664,803,314.11/400,925.17
  6. Step 6: Final answer
    x = 330,896.67

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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.