Home / 386,583.12-533,483.55-216,820.89

Finding the Fourth Proportional to 386,583.12, 533,483.55 and 216,820.89

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Solution

The fourth proportional to 386,583.12, 533,483.55 and 216,820.89 is: 299,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,583.12 : 533,483.55 = 216,820.89 : x
  2. Step 2: Convert to fraction form
    386,583.12/533,483.55 = 216,820.89/x
  3. Step 3: Cross multiply
    386,583.12x = 533,483.55 × 216,820.89
  4. Step 4: Simplify right side
    386,583.12x = 115,670,378,111.36
  5. Step 5: Solve for x
    x = 115,670,378,111.36/386,583.12
  6. Step 6: Final answer
    x = 299,212.18

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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.