Home / 219,110,813.60-328,666,220.40-128,187,600.80

Finding the Fourth Proportional to 219,110,813.60, 328,666,220.40 and 128,187,600.80

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Solution

The fourth proportional to 219,110,813.60, 328,666,220.40 and 128,187,600.80 is: 192,281,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,110,813.60 : 328,666,220.40 = 128,187,600.80 : x
  2. Step 2: Convert to fraction form
    219,110,813.60/328,666,220.40 = 128,187,600.80/x
  3. Step 3: Cross multiply
    219,110,813.60x = 328,666,220.40 × 128,187,600.80
  4. Step 4: Simplify right side
    219,110,813.60x = 42,130,934,257,080,016
  5. Step 5: Solve for x
    x = 42,130,934,257,080,016/219,110,813.60
  6. Step 6: Final answer
    x = 192,281,401.20

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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.