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Finding the Fourth Proportional to 456,990.66, 630,666.91 and 253,041.57

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Solution

The fourth proportional to 456,990.66, 630,666.91 and 253,041.57 is: 349,208.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,990.66 : 630,666.91 = 253,041.57 : x
  2. Step 2: Convert to fraction form
    456,990.66/630,666.91 = 253,041.57/x
  3. Step 3: Cross multiply
    456,990.66x = 630,666.91 × 253,041.57
  4. Step 4: Simplify right side
    456,990.66x = 159,584,945,369.75
  5. Step 5: Solve for x
    x = 159,584,945,369.75/456,990.66
  6. Step 6: Final answer
    x = 349,208.33

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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.