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Finding the Fourth Proportional to 455,215.68, 628,217.28 and 254,011.68

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Solution

The fourth proportional to 455,215.68, 628,217.28 and 254,011.68 is: 350,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,215.68 : 628,217.28 = 254,011.68 : x
  2. Step 2: Convert to fraction form
    455,215.68/628,217.28 = 254,011.68/x
  3. Step 3: Cross multiply
    455,215.68x = 628,217.28 × 254,011.68
  4. Step 4: Simplify right side
    455,215.68x = 159,574,526,697.83
  5. Step 5: Solve for x
    x = 159,574,526,697.83/455,215.68
  6. Step 6: Final answer
    x = 350,547.08

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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.