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Finding the Fourth Proportional to 228,695.60, 315,603.24 and 128,094.32

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Solution

The fourth proportional to 228,695.60, 315,603.24 and 128,094.32 is: 176,772.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,695.60 : 315,603.24 = 128,094.32 : x
  2. Step 2: Convert to fraction form
    228,695.60/315,603.24 = 128,094.32/x
  3. Step 3: Cross multiply
    228,695.60x = 315,603.24 × 128,094.32
  4. Step 4: Simplify right side
    228,695.60x = 40,426,982,417.60
  5. Step 5: Solve for x
    x = 40,426,982,417.60/228,695.60
  6. Step 6: Final answer
    x = 176,772.02

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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.