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Finding the Fourth Proportional to 528,009.80, 790,848.30 and 212,304.20

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Solution

The fourth proportional to 528,009.80, 790,848.30 and 212,304.20 is: 317,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,009.80 : 790,848.30 = 212,304.20 : x
  2. Step 2: Convert to fraction form
    528,009.80/790,848.30 = 212,304.20/x
  3. Step 3: Cross multiply
    528,009.80x = 790,848.30 × 212,304.20
  4. Step 4: Simplify right side
    528,009.80x = 167,900,415,652.86
  5. Step 5: Solve for x
    x = 167,900,415,652.86/528,009.80
  6. Step 6: Final answer
    x = 317,987.31

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1.5x scale

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.