Finding the Fourth Proportional to 430,897,716.18, 646,437,362.04 and 139,742,136.21
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Solution
The fourth proportional to 430,897,716.18, 646,437,362.04 and 139,742,136.21 is: 209,642,647.21
Step by Step Solution
- Step 1: Write the proportion equation
430,897,716.18 : 646,437,362.04 = 139,742,136.21 : x - Step 2: Convert to fraction form
430,897,716.18/646,437,362.04 = 139,742,136.21/x - Step 3: Cross multiply
430,897,716.18x = 646,437,362.04 × 139,742,136.21 - Step 4: Simplify right side
430,897,716.18x = 90,334,537,897,426,768 - Step 5: Solve for x
x = 90,334,537,897,426,768/430,897,716.18 - Step 6: Final answer
x = 209,642,647.21
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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.