Home / 511,916.60-767,875.24-212,316.74

Finding the Fourth Proportional to 511,916.60, 767,875.24 and 212,316.74

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Solution

The fourth proportional to 511,916.60, 767,875.24 and 212,316.74 is: 318,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,916.60 : 767,875.24 = 212,316.74 : x
  2. Step 2: Convert to fraction form
    511,916.60/767,875.24 = 212,316.74/x
  3. Step 3: Cross multiply
    511,916.60x = 767,875.24 × 212,316.74
  4. Step 4: Simplify right side
    511,916.60x = 163,032,767,683.52
  5. Step 5: Solve for x
    x = 163,032,767,683.52/511,916.60
  6. Step 6: Final answer
    x = 318,475.25

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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.