Home / 212,018,030.47-318,031,031.17-66,448,368.96

Finding the Fourth Proportional to 212,018,030.47, 318,031,031.17 and 66,448,368.96

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Solution

The fourth proportional to 212,018,030.47, 318,031,031.17 and 66,448,368.96 is: 99,673,802.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,018,030.47 : 318,031,031.17 = 66,448,368.96 : x
  2. Step 2: Convert to fraction form
    212,018,030.47/318,031,031.17 = 66,448,368.96/x
  3. Step 3: Cross multiply
    212,018,030.47x = 318,031,031.17 × 66,448,368.96
  4. Step 4: Simplify right side
    212,018,030.47x = 21,132,643,297,991,024
  5. Step 5: Solve for x
    x = 21,132,643,297,991,024/212,018,030.47
  6. Step 6: Final answer
    x = 99,673,802.51

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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.