Home / 400,835.08-553,132.70-219,547.80

Finding the Fourth Proportional to 400,835.08, 553,132.70 and 219,547.80

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Solution

The fourth proportional to 400,835.08, 553,132.70 and 219,547.80 is: 302,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,835.08 : 553,132.70 = 219,547.80 : x
  2. Step 2: Convert to fraction form
    400,835.08/553,132.70 = 219,547.80/x
  3. Step 3: Cross multiply
    400,835.08x = 553,132.70 × 219,547.80
  4. Step 4: Simplify right side
    400,835.08x = 121,439,067,393.06
  5. Step 5: Solve for x
    x = 121,439,067,393.06/400,835.08
  6. Step 6: Final answer
    x = 302,965.17

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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.