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Finding the Fourth Proportional to 302,518.65, 453,777.98 and 287,756.40

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Solution

The fourth proportional to 302,518.65, 453,777.98 and 287,756.40 is: 431,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,518.65 : 453,777.98 = 287,756.40 : x
  2. Step 2: Convert to fraction form
    302,518.65/453,777.98 = 287,756.40/x
  3. Step 3: Cross multiply
    302,518.65x = 453,777.98 × 287,756.40
  4. Step 4: Simplify right side
    302,518.65x = 130,577,516,485.29
  5. Step 5: Solve for x
    x = 130,577,516,485.29/302,518.65
  6. Step 6: Final answer
    x = 431,634.60

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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.