Home / 371,418.34-513,038.08-307,147.18

Finding the Fourth Proportional to 371,418.34, 513,038.08 and 307,147.18

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Solution

The fourth proportional to 371,418.34, 513,038.08 and 307,147.18 is: 424,260.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,418.34 : 513,038.08 = 307,147.18 : x
  2. Step 2: Convert to fraction form
    371,418.34/513,038.08 = 307,147.18/x
  3. Step 3: Cross multiply
    371,418.34x = 513,038.08 × 307,147.18
  4. Step 4: Simplify right side
    371,418.34x = 157,578,199,504.61
  5. Step 5: Solve for x
    x = 157,578,199,504.61/371,418.34
  6. Step 6: Final answer
    x = 424,260.69

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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.