Home / 210,006,128.70-315,009,193.05-190,858,506.30

Finding the Fourth Proportional to 210,006,128.70, 315,009,193.05 and 190,858,506.30

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Solution

The fourth proportional to 210,006,128.70, 315,009,193.05 and 190,858,506.30 is: 286,287,759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006,128.70 : 315,009,193.05 = 190,858,506.30 : x
  2. Step 2: Convert to fraction form
    210,006,128.70/315,009,193.05 = 190,858,506.30/x
  3. Step 3: Cross multiply
    210,006,128.70x = 315,009,193.05 × 190,858,506.30
  4. Step 4: Simplify right side
    210,006,128.70x = 60,122,184,056,291,344
  5. Step 5: Solve for x
    x = 60,122,184,056,291,344/210,006,128.70
  6. Step 6: Final answer
    x = 286,287,759.45

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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.