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Finding the Fourth Proportional to 292,804.77, 439,334.28 and 103,400.55

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Solution

The fourth proportional to 292,804.77, 439,334.28 and 103,400.55 is: 155,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,804.77 : 439,334.28 = 103,400.55 : x
  2. Step 2: Convert to fraction form
    292,804.77/439,334.28 = 103,400.55/x
  3. Step 3: Cross multiply
    292,804.77x = 439,334.28 × 103,400.55
  4. Step 4: Simplify right side
    292,804.77x = 45,427,406,185.85
  5. Step 5: Solve for x
    x = 45,427,406,185.85/292,804.77
  6. Step 6: Final answer
    x = 155,145.72

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1.5x scale

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.