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Finding the Fourth Proportional to 353,804.95, 530,264.43 and 278,628.22

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Solution

The fourth proportional to 353,804.95, 530,264.43 and 278,628.22 is: 417,593.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,804.95 : 530,264.43 = 278,628.22 : x
  2. Step 2: Convert to fraction form
    353,804.95/530,264.43 = 278,628.22/x
  3. Step 3: Cross multiply
    353,804.95x = 530,264.43 × 278,628.22
  4. Step 4: Simplify right side
    353,804.95x = 147,746,634,260.22
  5. Step 5: Solve for x
    x = 147,746,634,260.22/353,804.95
  6. Step 6: Final answer
    x = 417,593.46

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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.