Home / 234,289,220.57-323,312,117.25-128,439,015.72

Finding the Fourth Proportional to 234,289,220.57, 323,312,117.25 and 128,439,015.72

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Solution

The fourth proportional to 234,289,220.57, 323,312,117.25 and 128,439,015.72 is: 177,242,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,289,220.57 : 323,312,117.25 = 128,439,015.72 : x
  2. Step 2: Convert to fraction form
    234,289,220.57/323,312,117.25 = 128,439,015.72/x
  3. Step 3: Cross multiply
    234,289,220.57x = 323,312,117.25 × 128,439,015.72
  4. Step 4: Simplify right side
    234,289,220.57x = 41,525,890,109,939,232
  5. Step 5: Solve for x
    x = 41,525,890,109,939,232/234,289,220.57
  6. Step 6: Final answer
    x = 177,242,000.33

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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.