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Finding the Fourth Proportional to 572,443.40, 859,091.70 and 218,149.40

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Solution

The fourth proportional to 572,443.40, 859,091.70 and 218,149.40 is: 327,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,443.40 : 859,091.70 = 218,149.40 : x
  2. Step 2: Convert to fraction form
    572,443.40/859,091.70 = 218,149.40/x
  3. Step 3: Cross multiply
    572,443.40x = 859,091.70 × 218,149.40
  4. Step 4: Simplify right side
    572,443.40x = 187,410,338,899.98
  5. Step 5: Solve for x
    x = 187,410,338,899.98/572,443.40
  6. Step 6: Final answer
    x = 327,386.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.