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Finding the Fourth Proportional to 421,557.06, 581,699.80 and 249,482.54

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Solution

The fourth proportional to 421,557.06, 581,699.80 and 249,482.54 is: 344,256.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,557.06 : 581,699.80 = 249,482.54 : x
  2. Step 2: Convert to fraction form
    421,557.06/581,699.80 = 249,482.54/x
  3. Step 3: Cross multiply
    421,557.06x = 581,699.80 × 249,482.54
  4. Step 4: Simplify right side
    421,557.06x = 145,123,941,647.45
  5. Step 5: Solve for x
    x = 145,123,941,647.45/421,557.06
  6. Step 6: Final answer
    x = 344,256.93

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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.