Home / 511,725.18-767,259.32-212,412.36

Finding the Fourth Proportional to 511,725.18, 767,259.32 and 212,412.36

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Solution

The fourth proportional to 511,725.18, 767,259.32 and 212,412.36 is: 318,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,725.18 : 767,259.32 = 212,412.36 : x
  2. Step 2: Convert to fraction form
    511,725.18/767,259.32 = 212,412.36/x
  3. Step 3: Cross multiply
    511,725.18x = 767,259.32 × 212,412.36
  4. Step 4: Simplify right side
    511,725.18x = 162,975,364,811.34
  5. Step 5: Solve for x
    x = 162,975,364,811.34/511,725.18
  6. Step 6: Final answer
    x = 318,482.21

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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.