Home / 400,947.40-553,307.87-217,186.34

Finding the Fourth Proportional to 400,947.40, 553,307.87 and 217,186.34

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Solution

The fourth proportional to 400,947.40, 553,307.87 and 217,186.34 is: 299,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,947.40 : 553,307.87 = 217,186.34 : x
  2. Step 2: Convert to fraction form
    400,947.40/553,307.87 = 217,186.34/x
  3. Step 3: Cross multiply
    400,947.40x = 553,307.87 × 217,186.34
  4. Step 4: Simplify right side
    400,947.40x = 120,170,911,178.50
  5. Step 5: Solve for x
    x = 120,170,911,178.50/400,947.40
  6. Step 6: Final answer
    x = 299,717.40

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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.