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Finding the Fourth Proportional to 358,682.40, 537,980.40 and 148,298.40

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Solution

The fourth proportional to 358,682.40, 537,980.40 and 148,298.40 is: 222,429.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,682.40 : 537,980.40 = 148,298.40 : x
  2. Step 2: Convert to fraction form
    358,682.40/537,980.40 = 148,298.40/x
  3. Step 3: Cross multiply
    358,682.40x = 537,980.40 × 148,298.40
  4. Step 4: Simplify right side
    358,682.40x = 79,781,632,551.36
  5. Step 5: Solve for x
    x = 79,781,632,551.36/358,682.40
  6. Step 6: Final answer
    x = 222,429.74

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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.