Home / 210,507,484.26-315,513,254.09-85,932,312.66

Finding the Fourth Proportional to 210,507,484.26, 315,513,254.09 and 85,932,312.66

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Solution

The fourth proportional to 210,507,484.26, 315,513,254.09 and 85,932,312.66 is: 128,797,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,507,484.26 : 315,513,254.09 = 85,932,312.66 : x
  2. Step 2: Convert to fraction form
    210,507,484.26/315,513,254.09 = 85,932,312.66/x
  3. Step 3: Cross multiply
    210,507,484.26x = 315,513,254.09 × 85,932,312.66
  4. Step 4: Simplify right side
    210,507,484.26x = 27,112,783,598,406,240
  5. Step 5: Solve for x
    x = 27,112,783,598,406,240/210,507,484.26
  6. Step 6: Final answer
    x = 128,797,242.98

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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.