Home / 400,319.04-552,807.60-257,328.12

Finding the Fourth Proportional to 400,319.04, 552,807.60 and 257,328.12

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Solution

The fourth proportional to 400,319.04, 552,807.60 and 257,328.12 is: 355,348.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,319.04 : 552,807.60 = 257,328.12 : x
  2. Step 2: Convert to fraction form
    400,319.04/552,807.60 = 257,328.12/x
  3. Step 3: Cross multiply
    400,319.04x = 552,807.60 × 257,328.12
  4. Step 4: Simplify right side
    400,319.04x = 142,252,940,429.71
  5. Step 5: Solve for x
    x = 142,252,940,429.71/400,319.04
  6. Step 6: Final answer
    x = 355,348.92

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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.