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Finding the Fourth Proportional to 355,707.80, 533,561.70 and 343,266.20

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Solution

The fourth proportional to 355,707.80, 533,561.70 and 343,266.20 is: 514,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,707.80 : 533,561.70 = 343,266.20 : x
  2. Step 2: Convert to fraction form
    355,707.80/533,561.70 = 343,266.20/x
  3. Step 3: Cross multiply
    355,707.80x = 533,561.70 × 343,266.20
  4. Step 4: Simplify right side
    355,707.80x = 183,153,697,224.54
  5. Step 5: Solve for x
    x = 183,153,697,224.54/355,707.80
  6. Step 6: Final answer
    x = 514,899.30

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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.