Home / 228,490,312.16-315,325,671.72-128,019,615.96

Finding the Fourth Proportional to 228,490,312.16, 315,325,671.72 and 128,019,615.96

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Solution

The fourth proportional to 228,490,312.16, 315,325,671.72 and 128,019,615.96 is: 176,672,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,490,312.16 : 315,325,671.72 = 128,019,615.96 : x
  2. Step 2: Convert to fraction form
    228,490,312.16/315,325,671.72 = 128,019,615.96/x
  3. Step 3: Cross multiply
    228,490,312.16x = 315,325,671.72 × 128,019,615.96
  4. Step 4: Simplify right side
    228,490,312.16x = 40,367,871,395,923,432
  5. Step 5: Solve for x
    x = 40,367,871,395,923,432/228,490,312.16
  6. Step 6: Final answer
    x = 176,672,135.52

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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.