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Finding the Fourth Proportional to 540,100.99, 745,316.54 and 310,640.95

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Solution

The fourth proportional to 540,100.99, 745,316.54 and 310,640.95 is: 428,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,100.99 : 745,316.54 = 310,640.95 : x
  2. Step 2: Convert to fraction form
    540,100.99/745,316.54 = 310,640.95/x
  3. Step 3: Cross multiply
    540,100.99x = 745,316.54 × 310,640.95
  4. Step 4: Simplify right side
    540,100.99x = 231,525,836,483.11
  5. Step 5: Solve for x
    x = 231,525,836,483.11/540,100.99
  6. Step 6: Final answer
    x = 428,671.38

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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.