Home / 260,554,139.64-390,843,779.28-85,673,301.84

Finding the Fourth Proportional to 260,554,139.64, 390,843,779.28 and 85,673,301.84

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Solution

The fourth proportional to 260,554,139.64, 390,843,779.28 and 85,673,301.84 is: 128,514,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,139.64 : 390,843,779.28 = 85,673,301.84 : x
  2. Step 2: Convert to fraction form
    260,554,139.64/390,843,779.28 = 85,673,301.84/x
  3. Step 3: Cross multiply
    260,554,139.64x = 390,843,779.28 × 85,673,301.84
  4. Step 4: Simplify right side
    260,554,139.64x = 33,484,877,074,541,776
  5. Step 5: Solve for x
    x = 33,484,877,074,541,776/260,554,139.64
  6. Step 6: Final answer
    x = 128,514,085.87

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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.