Home / 400,772.12-553,108.80-255,582.64

Finding the Fourth Proportional to 400,772.12, 553,108.80 and 255,582.64

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Solution

The fourth proportional to 400,772.12, 553,108.80 and 255,582.64 is: 352,731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,772.12 : 553,108.80 = 255,582.64 : x
  2. Step 2: Convert to fraction form
    400,772.12/553,108.80 = 255,582.64/x
  3. Step 3: Cross multiply
    400,772.12x = 553,108.80 × 255,582.64
  4. Step 4: Simplify right side
    400,772.12x = 141,365,007,311.23
  5. Step 5: Solve for x
    x = 141,365,007,311.23/400,772.12
  6. Step 6: Final answer
    x = 352,731.64

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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.