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Finding the Fourth Proportional to 302,605.70, 453,908.55 and 287,053.70

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Solution

The fourth proportional to 302,605.70, 453,908.55 and 287,053.70 is: 430,580.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,605.70 : 453,908.55 = 287,053.70 : x
  2. Step 2: Convert to fraction form
    302,605.70/453,908.55 = 287,053.70/x
  3. Step 3: Cross multiply
    302,605.70x = 453,908.55 × 287,053.70
  4. Step 4: Simplify right side
    302,605.70x = 130,296,128,739.14
  5. Step 5: Solve for x
    x = 130,296,128,739.14/302,605.70
  6. Step 6: Final answer
    x = 430,580.55

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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.