Home / 260,511.60-390,730.95-83,036.55

Finding the Fourth Proportional to 260,511.60, 390,730.95 and 83,036.55

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Solution

The fourth proportional to 260,511.60, 390,730.95 and 83,036.55 is: 124,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,511.60 : 390,730.95 = 83,036.55 : x
  2. Step 2: Convert to fraction form
    260,511.60/390,730.95 = 83,036.55/x
  3. Step 3: Cross multiply
    260,511.60x = 390,730.95 × 83,036.55
  4. Step 4: Simplify right side
    260,511.60x = 32,444,950,066.22
  5. Step 5: Solve for x
    x = 32,444,950,066.22/260,511.60
  6. Step 6: Final answer
    x = 124,543.21

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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.