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Finding the Fourth Proportional to 445,702.55, 668,488.12 and 146,214.77

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Solution

The fourth proportional to 445,702.55, 668,488.12 and 146,214.77 is: 219,300.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,702.55 : 668,488.12 = 146,214.77 : x
  2. Step 2: Convert to fraction form
    445,702.55/668,488.12 = 146,214.77/x
  3. Step 3: Cross multiply
    445,702.55x = 668,488.12 × 146,214.77
  4. Step 4: Simplify right side
    445,702.55x = 97,742,833,005.55
  5. Step 5: Solve for x
    x = 97,742,833,005.55/445,702.55
  6. Step 6: Final answer
    x = 219,300.59

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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.