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Finding the Fourth Proportional to 211,124.98, 316,817.45 and 83,018.72

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Solution

The fourth proportional to 211,124.98, 316,817.45 and 83,018.72 is: 124,579.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,124.98 : 316,817.45 = 83,018.72 : x
  2. Step 2: Convert to fraction form
    211,124.98/316,817.45 = 83,018.72/x
  3. Step 3: Cross multiply
    211,124.98x = 316,817.45 × 83,018.72
  4. Step 4: Simplify right side
    211,124.98x = 26,301,779,172.66
  5. Step 5: Solve for x
    x = 26,301,779,172.66/211,124.98
  6. Step 6: Final answer
    x = 124,579.19

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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.