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Finding the Fourth Proportional to 292,880.40, 439,154.04 and 115,291.20

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Solution

The fourth proportional to 292,880.40, 439,154.04 and 115,291.20 is: 172,871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,880.40 : 439,154.04 = 115,291.20 : x
  2. Step 2: Convert to fraction form
    292,880.40/439,154.04 = 115,291.20/x
  3. Step 3: Cross multiply
    292,880.40x = 439,154.04 × 115,291.20
  4. Step 4: Simplify right side
    292,880.40x = 50,630,596,256.45
  5. Step 5: Solve for x
    x = 50,630,596,256.45/292,880.40
  6. Step 6: Final answer
    x = 172,871.23

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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.