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Finding the Fourth Proportional to 499,133.56, 688,802.80 and 272,779.08

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Solution

The fourth proportional to 499,133.56, 688,802.80 and 272,779.08 is: 376,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,133.56 : 688,802.80 = 272,779.08 : x
  2. Step 2: Convert to fraction form
    499,133.56/688,802.80 = 272,779.08/x
  3. Step 3: Cross multiply
    499,133.56x = 688,802.80 × 272,779.08
  4. Step 4: Simplify right side
    499,133.56x = 187,890,994,085.42
  5. Step 5: Solve for x
    x = 187,890,994,085.42/499,133.56
  6. Step 6: Final answer
    x = 376,434.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.