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Finding the Fourth Proportional to 386,888.13, 533,907.72 and 214,808.76

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Solution

The fourth proportional to 386,888.13, 533,907.72 and 214,808.76 is: 296,437.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,888.13 : 533,907.72 = 214,808.76 : x
  2. Step 2: Convert to fraction form
    386,888.13/533,907.72 = 214,808.76/x
  3. Step 3: Cross multiply
    386,888.13x = 533,907.72 × 214,808.76
  4. Step 4: Simplify right side
    386,888.13x = 114,688,055,287.63
  5. Step 5: Solve for x
    x = 114,688,055,287.63/386,888.13
  6. Step 6: Final answer
    x = 296,437.26

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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.