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Finding the Fourth Proportional to 528,159.51, 728,953.29 and 313,417.98

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Solution

The fourth proportional to 528,159.51, 728,953.29 and 313,417.98 is: 432,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,159.51 : 728,953.29 = 313,417.98 : x
  2. Step 2: Convert to fraction form
    528,159.51/728,953.29 = 313,417.98/x
  3. Step 3: Cross multiply
    528,159.51x = 728,953.29 × 313,417.98
  4. Step 4: Simplify right side
    528,159.51x = 228,467,067,666.15
  5. Step 5: Solve for x
    x = 228,467,067,666.15/528,159.51
  6. Step 6: Final answer
    x = 432,572.10

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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.