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Finding the Fourth Proportional to 377,803, 521,368.14 and 208,036.72

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Solution

The fourth proportional to 377,803, 521,368.14 and 208,036.72 is: 287,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,803 : 521,368.14 = 208,036.72 : x
  2. Step 2: Convert to fraction form
    377,803/521,368.14 = 208,036.72/x
  3. Step 3: Cross multiply
    377,803x = 521,368.14 × 208,036.72
  4. Step 4: Simplify right side
    377,803x = 108,463,717,758.10
  5. Step 5: Solve for x
    x = 108,463,717,758.10/377,803
  6. Step 6: Final answer
    x = 287,090.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.