Home / 228,583,236.48-315,471,034.85-128,138,802.72

Finding the Fourth Proportional to 228,583,236.48, 315,471,034.85 and 128,138,802.72

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Solution

The fourth proportional to 228,583,236.48, 315,471,034.85 and 128,138,802.72 is: 176,846,217.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,583,236.48 : 315,471,034.85 = 128,138,802.72 : x
  2. Step 2: Convert to fraction form
    228,583,236.48/315,471,034.85 = 128,138,802.72/x
  3. Step 3: Cross multiply
    228,583,236.48x = 315,471,034.85 × 128,138,802.72
  4. Step 4: Simplify right side
    228,583,236.48x = 40,424,080,697,877,704
  5. Step 5: Solve for x
    x = 40,424,080,697,877,704/228,583,236.48
  6. Step 6: Final answer
    x = 176,846,217.25

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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.