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Finding the Fourth Proportional to 358,458.40, 537,687.60 and 109,140.40

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Solution

The fourth proportional to 358,458.40, 537,687.60 and 109,140.40 is: 163,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,458.40 : 537,687.60 = 109,140.40 : x
  2. Step 2: Convert to fraction form
    358,458.40/537,687.60 = 109,140.40/x
  3. Step 3: Cross multiply
    358,458.40x = 537,687.60 × 109,140.40
  4. Step 4: Simplify right side
    358,458.40x = 58,683,439,739.04
  5. Step 5: Solve for x
    x = 58,683,439,739.04/358,458.40
  6. Step 6: Final answer
    x = 163,710.60

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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.