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Finding the Fourth Proportional to 421,315.56, 581,424.48 and 230,346.72

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Solution

The fourth proportional to 421,315.56, 581,424.48 and 230,346.72 is: 317,883.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,315.56 : 581,424.48 = 230,346.72 : x
  2. Step 2: Convert to fraction form
    421,315.56/581,424.48 = 230,346.72/x
  3. Step 3: Cross multiply
    421,315.56x = 581,424.48 × 230,346.72
  4. Step 4: Simplify right side
    421,315.56x = 133,929,221,895.71
  5. Step 5: Solve for x
    x = 133,929,221,895.71/421,315.56
  6. Step 6: Final answer
    x = 317,883.40

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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.