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Finding the Fourth Proportional to 577,360.13, 866,088.65 and 212,721

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Solution

The fourth proportional to 577,360.13, 866,088.65 and 212,721 is: 319,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,360.13 : 866,088.65 = 212,721 : x
  2. Step 2: Convert to fraction form
    577,360.13/866,088.65 = 212,721/x
  3. Step 3: Cross multiply
    577,360.13x = 866,088.65 × 212,721
  4. Step 4: Simplify right side
    577,360.13x = 184,235,242,653.05
  5. Step 5: Solve for x
    x = 184,235,242,653.05/577,360.13
  6. Step 6: Final answer
    x = 319,099.35

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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.