Home / 400,869.84-553,178.96-219,572.40

Finding the Fourth Proportional to 400,869.84, 553,178.96 and 219,572.40

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Solution

The fourth proportional to 400,869.84, 553,178.96 and 219,572.40 is: 302,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,869.84 : 553,178.96 = 219,572.40 : x
  2. Step 2: Convert to fraction form
    400,869.84/553,178.96 = 219,572.40/x
  3. Step 3: Cross multiply
    400,869.84x = 553,178.96 × 219,572.40
  4. Step 4: Simplify right side
    400,869.84x = 121,462,831,876.70
  5. Step 5: Solve for x
    x = 121,462,831,876.70/400,869.84
  6. Step 6: Final answer
    x = 302,998.18

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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.