Home / 260,554,145.39-390,843,787.91-85,673,307.66

Finding the Fourth Proportional to 260,554,145.39, 390,843,787.91 and 85,673,307.66

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Solution

The fourth proportional to 260,554,145.39, 390,843,787.91 and 85,673,307.66 is: 128,514,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,145.39 : 390,843,787.91 = 85,673,307.66 : x
  2. Step 2: Convert to fraction form
    260,554,145.39/390,843,787.91 = 85,673,307.66/x
  3. Step 3: Cross multiply
    260,554,145.39x = 390,843,787.91 × 85,673,307.66
  4. Step 4: Simplify right side
    260,554,145.39x = 33,484,880,088,184,848
  5. Step 5: Solve for x
    x = 33,484,880,088,184,848/260,554,145.39
  6. Step 6: Final answer
    x = 128,514,094.60

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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.