Home / 210,355,999.40-315,533,999.10-142,408,274.60

Finding the Fourth Proportional to 210,355,999.40, 315,533,999.10 and 142,408,274.60

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Solution

The fourth proportional to 210,355,999.40, 315,533,999.10 and 142,408,274.60 is: 213,612,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,355,999.40 : 315,533,999.10 = 142,408,274.60 : x
  2. Step 2: Convert to fraction form
    210,355,999.40/315,533,999.10 = 142,408,274.60/x
  3. Step 3: Cross multiply
    210,355,999.40x = 315,533,999.10 × 142,408,274.60
  4. Step 4: Simplify right side
    210,355,999.40x = 44,934,652,389,468,952
  5. Step 5: Solve for x
    x = 44,934,652,389,468,952/210,355,999.40
  6. Step 6: Final answer
    x = 213,612,411.90

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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.