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Finding the Fourth Proportional to 389,368.60, 537,443.58 and 228,258.52

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Solution

The fourth proportional to 389,368.60, 537,443.58 and 228,258.52 is: 315,064.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,368.60 : 537,443.58 = 228,258.52 : x
  2. Step 2: Convert to fraction form
    389,368.60/537,443.58 = 228,258.52/x
  3. Step 3: Cross multiply
    389,368.60x = 537,443.58 × 228,258.52
  4. Step 4: Simplify right side
    389,368.60x = 122,676,076,154.30
  5. Step 5: Solve for x
    x = 122,676,076,154.30/389,368.60
  6. Step 6: Final answer
    x = 315,064.12

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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.