Home / 208,009,856.40-312,014,784.60-100,514,432.40

Finding the Fourth Proportional to 208,009,856.40, 312,014,784.60 and 100,514,432.40

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Solution

The fourth proportional to 208,009,856.40, 312,014,784.60 and 100,514,432.40 is: 150,771,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,856.40 : 312,014,784.60 = 100,514,432.40 : x
  2. Step 2: Convert to fraction form
    208,009,856.40/312,014,784.60 = 100,514,432.40/x
  3. Step 3: Cross multiply
    208,009,856.40x = 312,014,784.60 × 100,514,432.40
  4. Step 4: Simplify right side
    208,009,856.40x = 31,361,988,974,477,264
  5. Step 5: Solve for x
    x = 31,361,988,974,477,264/208,009,856.40
  6. Step 6: Final answer
    x = 150,771,648.60

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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.