Finding the Fourth Proportional to 442,866,214.90, 664,299,322.35 and 212,779,818.10
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Solution
The fourth proportional to 442,866,214.90, 664,299,322.35 and 212,779,818.10 is: 319,169,727.15
Step by Step Solution
- Step 1: Write the proportion equation
442,866,214.90 : 664,299,322.35 = 212,779,818.10 : x - Step 2: Convert to fraction form
442,866,214.90/664,299,322.35 = 212,779,818.10/x - Step 3: Cross multiply
442,866,214.90x = 664,299,322.35 × 212,779,818.10 - Step 4: Simplify right side
442,866,214.90x = 141,349,488,973,586,272 - Step 5: Solve for x
x = 141,349,488,973,586,272/442,866,214.90 - Step 6: Final answer
x = 319,169,727.15
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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.