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Finding the Fourth Proportional to 291,574.40, 402,374.53 and 162,521.05

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Solution

The fourth proportional to 291,574.40, 402,374.53 and 162,521.05 is: 224,280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,574.40 : 402,374.53 = 162,521.05 : x
  2. Step 2: Convert to fraction form
    291,574.40/402,374.53 = 162,521.05/x
  3. Step 3: Cross multiply
    291,574.40x = 402,374.53 × 162,521.05
  4. Step 4: Simplify right side
    291,574.40x = 65,394,332,078.74
  5. Step 5: Solve for x
    x = 65,394,332,078.74/291,574.40
  6. Step 6: Final answer
    x = 224,280.09

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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.