Home / 210,009,608.20-315,014,412.30-190,861,985.80

Finding the Fourth Proportional to 210,009,608.20, 315,014,412.30 and 190,861,985.80

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Solution

The fourth proportional to 210,009,608.20, 315,014,412.30 and 190,861,985.80 is: 286,292,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,009,608.20 : 315,014,412.30 = 190,861,985.80 : x
  2. Step 2: Convert to fraction form
    210,009,608.20/315,014,412.30 = 190,861,985.80/x
  3. Step 3: Cross multiply
    210,009,608.20x = 315,014,412.30 × 190,861,985.80
  4. Step 4: Simplify right side
    210,009,608.20x = 60,124,276,287,197,952
  5. Step 5: Solve for x
    x = 60,124,276,287,197,952/210,009,608.20
  6. Step 6: Final answer
    x = 286,292,978.70

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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.