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Finding the Fourth Proportional to 471,990.88, 651,354.48 and 257,130.89

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Solution

The fourth proportional to 471,990.88, 651,354.48 and 257,130.89 is: 354,844.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,990.88 : 651,354.48 = 257,130.89 : x
  2. Step 2: Convert to fraction form
    471,990.88/651,354.48 = 257,130.89/x
  3. Step 3: Cross multiply
    471,990.88x = 651,354.48 × 257,130.89
  4. Step 4: Simplify right side
    471,990.88x = 167,483,356,333.69
  5. Step 5: Solve for x
    x = 167,483,356,333.69/471,990.88
  6. Step 6: Final answer
    x = 354,844.47

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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.