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Finding the Fourth Proportional to 528,064.12, 792,362.72 and 208,445.01

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Solution

The fourth proportional to 528,064.12, 792,362.72 and 208,445.01 is: 312,772.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,064.12 : 792,362.72 = 208,445.01 : x
  2. Step 2: Convert to fraction form
    528,064.12/792,362.72 = 208,445.01/x
  3. Step 3: Cross multiply
    528,064.12x = 792,362.72 × 208,445.01
  4. Step 4: Simplify right side
    528,064.12x = 165,164,052,643.78
  5. Step 5: Solve for x
    x = 165,164,052,643.78/528,064.12
  6. Step 6: Final answer
    x = 312,772.72

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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.