Home / 317,386.37-438,115.10-215,457.39

Finding the Fourth Proportional to 317,386.37, 438,115.10 and 215,457.39

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Solution

The fourth proportional to 317,386.37, 438,115.10 and 215,457.39 is: 297,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,386.37 : 438,115.10 = 215,457.39 : x
  2. Step 2: Convert to fraction form
    317,386.37/438,115.10 = 215,457.39/x
  3. Step 3: Cross multiply
    317,386.37x = 438,115.10 × 215,457.39
  4. Step 4: Simplify right side
    317,386.37x = 94,395,134,888.30
  5. Step 5: Solve for x
    x = 94,395,134,888.30/317,386.37
  6. Step 6: Final answer
    x = 297,413.95

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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.