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Finding the Fourth Proportional to 456,838.90, 630,430.05 and 252,885.51

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Solution

The fourth proportional to 456,838.90, 630,430.05 and 252,885.51 is: 348,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,838.90 : 630,430.05 = 252,885.51 : x
  2. Step 2: Convert to fraction form
    456,838.90/630,430.05 = 252,885.51/x
  3. Step 3: Cross multiply
    456,838.90x = 630,430.05 × 252,885.51
  4. Step 4: Simplify right side
    456,838.90x = 159,426,624,713.58
  5. Step 5: Solve for x
    x = 159,426,624,713.58/456,838.90
  6. Step 6: Final answer
    x = 348,977.78

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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.