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Finding the Fourth Proportional to 292,443.36, 438,680.64 and 92,779.71

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Solution

The fourth proportional to 292,443.36, 438,680.64 and 92,779.71 is: 139,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,443.36 : 438,680.64 = 92,779.71 : x
  2. Step 2: Convert to fraction form
    292,443.36/438,680.64 = 92,779.71/x
  3. Step 3: Cross multiply
    292,443.36x = 438,680.64 × 92,779.71
  4. Step 4: Simplify right side
    292,443.36x = 40,700,662,561.81
  5. Step 5: Solve for x
    x = 40,700,662,561.81/292,443.36
  6. Step 6: Final answer
    x = 139,174.51

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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.