Home / 205,220.21-307,877.72-64,978.83

Finding the Fourth Proportional to 205,220.21, 307,877.72 and 64,978.83

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Solution

The fourth proportional to 205,220.21, 307,877.72 and 64,978.83 is: 97,483.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,220.21 : 307,877.72 = 64,978.83 : x
  2. Step 2: Convert to fraction form
    205,220.21/307,877.72 = 64,978.83/x
  3. Step 3: Cross multiply
    205,220.21x = 307,877.72 × 64,978.83
  4. Step 4: Simplify right side
    205,220.21x = 20,005,533,703.77
  5. Step 5: Solve for x
    x = 20,005,533,703.77/205,220.21
  6. Step 6: Final answer
    x = 97,483.26

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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.