Home / 260,079,368.40-390,118,275-65,990,408.40

Finding the Fourth Proportional to 260,079,368.40, 390,118,275 and 65,990,408.40

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Solution

The fourth proportional to 260,079,368.40, 390,118,275 and 65,990,408.40 is: 98,985,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,079,368.40 : 390,118,275 = 65,990,408.40 : x
  2. Step 2: Convert to fraction form
    260,079,368.40/390,118,275 = 65,990,408.40/x
  3. Step 3: Cross multiply
    260,079,368.40x = 390,118,275 × 65,990,408.40
  4. Step 4: Simplify right side
    260,079,368.40x = 25,744,064,291,553,508
  5. Step 5: Solve for x
    x = 25,744,064,291,553,508/260,079,368.40
  6. Step 6: Final answer
    x = 98,985,415.30

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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.