Home / 380,070.20-570,123.66-99,587.72

Finding the Fourth Proportional to 380,070.20, 570,123.66 and 99,587.72

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Solution

The fourth proportional to 380,070.20, 570,123.66 and 99,587.72 is: 149,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,070.20 : 570,123.66 = 99,587.72 : x
  2. Step 2: Convert to fraction form
    380,070.20/570,123.66 = 99,587.72/x
  3. Step 3: Cross multiply
    380,070.20x = 570,123.66 × 99,587.72
  4. Step 4: Simplify right side
    380,070.20x = 56,777,315,417.46
  5. Step 5: Solve for x
    x = 56,777,315,417.46/380,070.20
  6. Step 6: Final answer
    x = 149,386.39

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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.