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Finding the Fourth Proportional to 371,127.04, 512,421.60 and 228,078.88

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Solution

The fourth proportional to 371,127.04, 512,421.60 and 228,078.88 is: 314,912.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,127.04 : 512,421.60 = 228,078.88 : x
  2. Step 2: Convert to fraction form
    371,127.04/512,421.60 = 228,078.88/x
  3. Step 3: Cross multiply
    371,127.04x = 512,421.60 × 228,078.88
  4. Step 4: Simplify right side
    371,127.04x = 116,872,544,615.81
  5. Step 5: Solve for x
    x = 116,872,544,615.81/371,127.04
  6. Step 6: Final answer
    x = 314,912.50

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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.