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Finding the Fourth Proportional to 228,870.39, 316,099.77 and 156,148.47

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Solution

The fourth proportional to 228,870.39, 316,099.77 and 156,148.47 is: 215,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,870.39 : 316,099.77 = 156,148.47 : x
  2. Step 2: Convert to fraction form
    228,870.39/316,099.77 = 156,148.47/x
  3. Step 3: Cross multiply
    228,870.39x = 316,099.77 × 156,148.47
  4. Step 4: Simplify right side
    228,870.39x = 49,358,495,452.85
  5. Step 5: Solve for x
    x = 49,358,495,452.85/228,870.39
  6. Step 6: Final answer
    x = 215,661.34

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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.